baber/WOPTO huggingface dataset:
Patent CA-2006763-A1 (CA)
Title: Crosslinkable polyamides, polyamide-amic acids, polyamic acids and the derivatives which are cyclised to the corresponding polyamide-imide or polyimide
Inventor: ELDIN SAMEER H
IPC: C08G69/02
Filed: 1989-12-28
Abstract: Crosslinkable polyamides polyamide-amic acids, polyamic acids and the derivatives which are cyclised to the corresponding polyamide-imide or polyimide Abstract of the Disclosure Polyamides, polyamide-amic acids or polyamic acids containing the recurring structural unit of formula I                                          (I) and the derivatives which are cyclised to the corresponding polyamide-imide or poly-imide, wherein X and Y are each independently of the other -H or -COOH, R and R1 are each an aliphatic, cycloaliphatic, or aromatic radical, such that at least 1 mol% of the radicals R1 is a radical of formula Ia                   (Ia) and containing reactive end groups of formulae III, V, VI, VII, VIII, IX, X or XI           (III),       (V),      (VI),     (VII),    (VIII),           (IX),             (X) or             (XI) wherein Z is X or Y, R and R1 are as defined in formula I and m is 1 or 2, R2 is C1-C4alkyl, C1-C4alkoxy, or phenyl or naphthyl, each unsubstituted or substituted by hydroxy or halogen, and n is 0 or 1 or 2, A is a radical selected from the group consisting of -CH2-, -?H-CH3, -S-, -O- and -SO2-, E is allyl or methallyl, o is 0 or 1, and p and q are each 1 or 2, have particularly high thermal resistance after curing and are especially suitable for the fabrication of fibrous composite systems.
Patent CA-2007760-A1 (CA)
Title: Novel benzo[b][1,8]naphtyridine derivatives; process for preparing the same and compositions containing them
Inventor: ANTOINE MICHEL
IPC: C07D471/04
Filed: 1990-01-15
Abstract: New benzo[b][1,8]naphthyridine derivatives of general formula (I), in which R is a hydrogen atom or an alkyl, fluoroalkyl, cycloalkyl (3 to 6 C), alkoxy or alkylamino radical or an amine protective radical and either Hal is a fluorine, chlorine or bromine atom and R' is a hydrogen atom or Hal and R' are simultaneously fluorine atoms, their salts, their preparation and the compositions which contain them. These new products can be used as antimicrobial agents for topical application or as synthesis intermediates.   <IMAGE> (I)
Patent CA-2012222-A1 (CA)
Title: Functional control device
Inventor: ERIKSSON JOAKIM
IPC: D05B69/08
Filed: 1990-03-15
Abstract: AN ABSTRACT            A functional control device (1), designed to be used in primarily textile machines (20), in which the speed must be varied in a simple fashion. Its function involves a con-version of a pressure of a gaseous or liquid medium to a code, which is adapted to the machine. When speed control means, having plates (2,3), designed to be depressed, e.g. in a sewing machine (20), are used, one of the pedals cor-responds to a forward depressing movement and the other a backward depressing movement. When a nozzle (4) is used, said functions can also be provided. The so called forward de-pressing movement comprises a presser foot downwards and 12 speed steps,  from zero to a maximum rotational speed, which can be as high as 400-9000 rev./min.  A backward depressing movement comprises a presser foot as well as a cutting/cont-rolling function. The function of the pressure error inter-face can be varied in a simple way, for various types of machine control means, and for varying pressure sensitivi-ties. The output signals can be changed in a simple manner.
Patent CA-2018997-A1 (CA)
Inventor: NOBS ERWIN
IPC: G04F13/02
Filed: 1990-06-14
Abstract: The racing time-keeping apparatus of the video-finish type comprises a CCD photosensitive array (5) which can be read at a specified frequency corresponding to the rate of advance (VI) of the picture of the race. 
<??>The pictures are recorded and displayed by means of a recorder (22) and a monitor (23), commercially available, at a fixed, standardised scanning frequency. Since the frequency of picture capturing by the array is not synchronous with the display frequency, generation of picture segments is undertaken using buffer memories (19, 20), the picture segments next being stored in a picture memory (21) and then read in discontinuous fashion by skipping picture segments in synchronism with a standard TV scanning. 
<??>The apparatus makes it possible to offer a system at low cost price since it uses a recorder and a monitor which are currently available on the market. 
<IMAGE>
Patent CA-2019731-A1 (CA)
Inventor: FAZELI ABDOLMAJID
IPC: G01L13/06
Filed: 1990-06-25
Abstract: A pressure/differential pressure measuring device having a range plate with static and differential pressure sensors mounted therein.  A high pressure isolation plate is mounted on one side of the range plate with a high pressure diaphragm mounted on the side of the high pressure isolation plate away from the range plate and sealed thereto forming a first fluid chamber between the inside of the high pressure diaphragm and the high pressure isolation plate side of the sensor assemblies.  A low pressure isolation plate is mounted on the other side of the range plate with a low pressure diaphragm mounted on the side of the low pressure isolation plate away from the range plate and sealed thereto forming a second fluid chamber between the inside of said low pressure diaphragm and the low pressure isolation plate side of the sensor assemblies.   A conduit between the first and second fluid chambers has a range diaphragm mounted to isolate the first and second chambers and means are provided to apply the high and low pressure to the outside of the high and low pressure diaphragms respectively.     In a second configuration, the range diaphragm is mounted on one side of the range plate and a fourth diaphragm is provided mounted on the range plate and having a conduit running from the first fluid chamber to its high pressure side.  The fourth diaphragm is normally seated and not movable as long as the pressure on the high pressure side remains higher than the pressure on the low pressure side but is capable of movement if the pressure on the low pressure side should exceed that on the high pressure side until such time as the low pressure diaphragm is seated.
Patent CA-2020268-A1 (CA)
Title: Digital data management system
Inventor: DAVIS SCOTT H
IPC: G06F12/08
Filed: 1990-06-29
Abstract: ABSTRACT OF THE DISCLOSURE        A method of performing a management operation on a data storage device, the preferred embodiment describing an improved method and apparatus for merging two storage media (e.g., hard disks) in a shadow set of storage media.  The preferred method of managing a shadow set of storage media accessible by one or more data sources (e.g. host processors) for I/O operations, comprises the steps of: A. carrying out successive comparisons of data stored in corresponding locations in a plurality of shadow set storage media, respectively, while maintaining access to the storage media by the data sources for I/O operations; and B. performing a management operation on at least one of the shadow set storage media, the management operation comprising: (a) interrupting I/O operations to at least the shadow set storage medium on which the management operation is performed; (b) modifying data on the shadow set storage medium whose I/O is interrupted, based on the results of the comparisons performed in step A; and (c) resuming the availability of the modified storage medium for I/O operations by the data sources.   0190u
Patent CA-2021916-A1 (CA)
Title: Compositions and process of using in refrigeration
Inventor: CRIPPS HARRY N
IPC: C09K5/04
Filed: 1990-07-25
Abstract: Title Compositions and Process of Using in Refrigeration Abstract of Disclosure A blend of refrigerant with at least one fluorinated hydrocarbon, comprising at least one graft of a perfluoroalkene or a perfluoroalkylvinyl ether onto at least one alkane having at least four (4) carbon atoms, the number of carbon atoms in the alkane and the number of grafts of the perfluoro compound being such as to provide a lubricant which has an SUS viscosity at 100°F of at least 50 and a pour point of less than about -l0°C is disclosed for use in compression refrigeration.
Patent CA-2023377-A1 (CA)
Inventor: BARNARD DUNCAN
IPC: C01B31/36
Filed: 1990-08-16
Abstract: A resinous organosilicon preceramic polymer is melt spun into filaments which are rapidly cured, continuously gathered into a thread and pyrolyzed in a continuous process to form ceramic fibers which may be either solid or hollow. The preferred preceramic polymer is hydridopolysilazane and the preferred curing agents are Cl2, HCl, HBr, thionyl chloride and trichlorosilane, followed by treatment with an atmosphere containing water vapor.
Patent CA-2023580-A1 (CA)
Title: Breast pump adapter for filling infant nursers having disposable liners
Inventor: WILSON MICHAEL J
IPC: A61M1/06
Filed: 1990-08-17
Abstract: BREAST PUMP ADAPTER FOR FILLING INFANT            NURSERS HAVING DISPOSABLE LINERS               ABSTRACT OF THE DISCLOSURE     Infant nursers use a disposable, flexible plastic liner in a rigid, reusable shell. Previously it has been the practice when breast pumps are used to pump the breast milk into an intermediate storage container and then pour it into the dis-posable liner of the nurser, or another intermediate container for freezing. The present invention provides an adapter for use with existing breast pumps which allows the breast milk to be pumped directly into the liner of the nurser without the need for any valves or moving parts. The adapter snaps onto the existing nipple-retaining cap and uses the liner of the nurser itself to form a valve. In a second embodiment, the adapter is provided with a unitary threaded circular rim to attach directly to the threaded end of the nurser shell. A third embodiment has a unitary trigger control, which allows this adapters use with air pumps which produce unmodulated negative pressure.
Patent CA-2024162-A1 (CA)
Title: Benzazabicyclo carbamates as novel cholinesterase inhibitors
Inventor: CHEN YUHPYNG L
IPC: A61P25/28
Filed: 1990-08-28
Abstract: Compounds of the ~ormu1a (see fig.I) wherein R1, R2, R3, R4, X, m, n, o, p, q and r are as defined below.  The compounds are memory enhancing cholinesterase inhibitors useful in enhancing memory, novel intermediates used in their synthesis, and analgesic agents.
Patent CA-2027901-A1 (CA)
Title: Hardened gum formed-in-place membranes
Inventor: BRANDON STEVEN C
IPC: B01D69/14
Filed: 1990-10-17
Abstract: Stable formed-in-place saccharinic gum membranes on a porous support, the membranes being modified by contact with at least an equivalent of multivalent cations to anionic groups in the gum.
Patent CA-2028374-A1 (CA)
Title: Automobile air conditioner
IPC: B60H1/00
Filed: 1990-10-23
Abstract: ABSTRACT:     An air conditioner for use in an automobile comprises a generally rectangular box casing that is curved to conform with the curvature of the ceiling of the automobile and has an air inlet and an air outlet defined at opposite sides thereof. A generally elongate evaporator is accommodated in the casing adjacent the air inlet.  A cylindrical blade wheel connected to a motor with their axes aligned generates an air flow through the evaporator.  A stabilizer is arranged under the fan unit towards the air outlet, and an air flow deflector for controlling the direction of air flow is located between the fan unit and the air outlet.  A diffuser with a beam on its lower surface controls the air flow above the blade wheel. The result is an air conditioner that is more compact and less bulky in the vertical direction.
Patent CA-2028655-A1 (CA)
Title: Apparatus and process for countergravity casting of metal with air exclusion
Inventor: CHANDLEY GEORGE D
IPC: B22D18/04
Filed: 1990-10-26
Abstract: This invention is directed to methods and apparatus for countergravity casting of metals, particularly reactive metals, which contain elements which are reactive at casting temperatures with air to form oxides and/or nitrides harmful to the cast product. The present invention prevents air contamination of the melt in part by providing an apparatus and method of counter-gravity casting in which means are provided for spacing the upper surface of the molten metal at a distance from a source of ambient atmosphere which is sufficient to prevent Brillion zones from drawing air down to the metal.
Patent CA-2030497-A1 (CA)
Title: Flyback power converter
Inventor: ORR RAYMOND K
IPC: H02M3/335
Filed: 1990-11-21
Abstract: A method of providing power regulation in power conversion equipment, where power regulation is implemented on the primary side of a transformer used to provide isolation of a power source from the load.  The feedback mechanism utilizes current perturbations which are summed with the primary current in the power transformer.  These perturbations are transformed with the load current to the primary side of the power transformer and extracted using signal processing means to regenerate a useful signal which is isolated from the load.
Patent CA-2030765-A1 (CA)
Title: Agricultural machine with an improved working elements suspension
Inventor: WATTRON BERNARD
IPC: A01D34/66
Filed: 1990-11-23
Abstract: The present invention relates to an agricultural machine comprising at least one group of working members (19) and a structure (14), to which said group (19) is connected by means of a suspension device (22). The latter is structured in such a way that the group of working members (19) can: 
 
  - shift upwards and downwards in relation to the structure (14) as a result of the deformation of the deformable quadrilateral formed by the suspension members (48, 52) with said structure (14) and the group of working members (19); 
  - pivot about the straight line (72) 
 
<??>In contrast, because of the lateral suspension members (60, 66), the group of working members (19) cannot pivot about the straight line (75). In the invention, it is also possible to ensure the pivoting of the group of working members (19) about the straight line (74) is prevented or at least limited. 
<IMAGE>
Patent CA-2031531-A1 (CA)
Title: Gel casting method and apparatus
Inventor: SOANE DAVID S
IPC: C08F2/48
Filed: 1990-05-01
Abstract: A gel casting method and apparatus are used to cause a pre-gelled liquid mixture to gel sequentially in a given travelling direction, allowing still liquid material (27) to flow to the gelling front (29), replacing volumes lost due to shrinkage during the change of state from a liquid (27) to a gel (37). The differential gelling method provides stress-free gels free of voids common to highly stressed gels, and the method is applicable to column and slab gels, and particularly to capillary columns and very thin slab gels.
Patent CA-2031681-A1 (CA)
Title: Process for producing foams
Inventor: BEHME KLAUS-JURGEN
IPC: C08K5/06
Filed: 1990-12-06
Abstract: Abstract of the disclosure Process for producing foams The invention relates to a process for producing foams based on polyisocyanates by reacting polyisocyanates, compounds having at least two hydrogen atoms reactive towards  isocyanate  groups,  blowing  agents  and,  if appropriate, further additives.  In this process, a blowing agent is used which is composed to the extent of at least 10 mol % of one or more fluorinated ethers of the formula I     CaHbFc - O - CdHeFf          where a = 1-6             d = 1-2 b = 1-12      e = 0-5 c = 1-12            f = 0-5.
Patent CA-2033376-A1 (CA)
Title: Method and apparatus for marking letter mail
Inventor: SANSONE RONALD P
IPC: B07C3/18
Filed: 1990-12-28
Abstract: This invention relates to methods and apparatus for marking letter mail or mail pieces to provide a fast and convenient way of determining zip code breaks in a stack of letter mail. The mail pieces have marks printed on the edges thereof indicative of the continuity of the same zip codes thereon. The marks are visible when the mail pieces are stacked. Adjacent envelopes with the same zip codes will have an edge mark at the same location, but upon the zip code changing, the next envelope will have a mark placed at a different location.      Numbers in sequence can be printed on each of the letters so that a mail clerk can inspect the last letter within a zip code group to determine if there is a sufficient number of mail pieces within that zip code set to allow a postal discount.      In an alternative embodiment, the markings on the side of the mail pieces are printed in a pattern so as to form numbers when a stack is viewed from the side. In addition to forming numbers, a pattern line can extend between the numbers. This allows a postal clerk to look at a stack of envelopes in a tray and from the side markings not only determine which of these envelopes are in the same zip code set, but also there would be an indication of the last number of the zip code.
Patent CA-2033444-A1 (CA)
Title: Production of elastic, compact or cellular moldings based on elastomers containing n-benzylurea groups in bound form, elastomers of this type, and n-benzylpolyoxyalkylene-polyamines which are suitable for this purpose
Inventor: BECKER JOHANNES
IPC: C08G18/76
Filed: 1990-12-31
Abstract: The present invention relates to a process for the production of elastic, compact or cellular moldings based on elastomers containing N-benzylurea groups in bound form, by reacting a)   one or more organic and/or modified organic polyiso-cyanates with b)   N-benzylpolyoxyalkylene-polyamines or mixtures of N-benzylpolyoxyalkylene-polyamines and polyoxy-alkylene-polyamines containing from 2 to 4 primary amino groups and c)   one or more alkyl-substituted aromatic polyamines having a molecular weight of up to 500, in the presence or absence of d)   catalysts and, if desired, e)   blowing agents, f)   auxiliaries and/or g)   additives, and to the N-benzylpolyoxyalkylene-polyamines and mix-tures of N-benzylpolyoxyalkylene-polyamines and polyoxy-alkylene-polyamines containing from 2 to 4 primary amino groups which can be used for this purpose, and to the elastomers prepared.
Patent CA-2034413-A1 (CA)
Title: Process for preparing drugs in the form of beads
Inventor: DELEUIL MICHEL
IPC: A61J3/06
Filed: 1991-01-17
Abstract: Process for the preparation of pearls based on a pharmaceutical active substance exhibiting an indefinite crystallization point. The said active substance is mixed in molten form with a pharmaceutical excipient promoting the solidification of the active substance, the melt is forced to pass through a nozzle which is subjected to a vibration, the pearls formed are allowed to fall in a tower countercurrentwise to a gas, and the pearls formed are collected in the bottom of the tower.
Patent CA-2034594-A1 (CA)
Title: Process for the preparation of pyrazolecarboxylic acid derivatives
Inventor: LACHHEIN STEPHEN
IPC: C07D231/14
Filed: 1991-01-18
Abstract: Abstract of the disclosure Process for the preparation of pyrazolecarboxylic acid derivatives Process for the preparation of pyrazolecarboxylic acid derivatives of the formula I                                (I) in which R1   independently of one another is haloalkyl or halo-gen, R2   is alkyl or alkynyl, R3   is  an  alkali  metal  or  alkaline  earth  metal, hydrogen, alkyl or alkoxyalkyl and n    = 1 or 2, by reaction of a compound of the formula II                         (II) in which Z is  chlorine or bromine, with an enol ether of the formula III                                             (III)   in which R5 is alkyl, to give a compound of the formula IV                   (IV) and its subsequent aromatization to give the compound I, wherein the reaction of the compound II with the compound III to give the compound IV is carried out in a 2-phase system (aqueous/organic) in the presence of an inorganic base at temperatures of 40 - 100°C and at pH values of 7-10 and then the compound IV formed is aromatized, without prior isolation, under acidic conditions in a 2-phase system (aqueous/organic)  to give the compound of the formula I.
Patent CA-2035760-A1 (CA)
Title: In situ dye generation for thermal transfer printing
Inventor: SHUTLLEWORTH LESLIE
IPC: B41M5/26
Filed: 1991-02-06
Abstract: IN SITU DYE GENERATION FOR THERMAL          TRANSFER PRINTING  Abstract In situ dye generation in a thermal transfer system is achieved by reacting an electrophile with a coupler compound to form an arylidene dye.  The electrophile and/or the coupler compound are transferred from a donor element to a receiver element where they react to form a colored dye.  The invention comprises a dye image recording element comprising a support bearing the electrophile which has the structure:           wherein X is halogen, substituted or unsubstituted alkylsulfonyloxy, substituted or unsubstituted arylsulfonyloxy, or substituted or unsubstituted acyloxy; E1, E2, E3, and E4 are each independently hydrogen, substituted or unsubstituted alkyl or alkenyl having up to about six carbon atoms, substituted or unsubstituted aryl having up to about ten carbon atoms, halogen, cyano, benzoxazolyl, nitro, -CO2R, -COR, -CONH2, -CONHR, -CONRR, or -SO2R, wherein each R is independently substituted or unsubstituted alkyl or alkenyl having up to about six carbon atoms, or substituted or unsubstituted aryl having up to about ten carbon atoms, with the proviso that at least two of the E groups are other than hydrogen, alkyl, alkenyl, aryl or halogen;     -ii-B1 and B2 represent the atoms necessary to complete optional five- or six-member rings formed with carbonyl moieties of E1, E2 or E3; B3 represents hydrogen or the atoms necessary to complete an optional five- or six-member ring with a carbonyl moiety of E1; and n is zero or one.
Patent CA-2039987-A1 (CA)
Title: Carbapenem compounds
Inventor: DAX SCOTT L
IPC: C07D477/14
Filed: 1991-04-08
Abstract: Abstract Carbapenem compounds of the general formula             I   wherein R is hydrogen or a carboxylic acid protecting group; R1 is selected from the group consisting of hydrogen, lower alkyl, lower alkoxy and hydroxyalkyl; R2 and R3 are each independently hydrogen, lower alkyl, lower alkoxy or lower alkylthio; and Y is (i)      an ester group;            (ii)     a thioester group;          (iii)    a piperazinyl or pyrrolidinyl derived carbamate group;            (iv)     a piperazinyl derived amine group;     (v)       a piperazinyl derived quaternary ammonium group: or (vi)      a group comprising a covalent bond;   the ester group and the thioester group being bonded to a substituted quinolonyl or naphthyridonyl group; the piperazinyl or pyrrolidinyl derived carbamate group, the piperazinyl derived amine group and the piperazinyl derived quaternary ammonium group containing a piperazinyl nucleus or a eyrrolidinyl nucleus having a nitrogen atom bonded directly to a substituted quinolonyl or naphthyridonyl group, the piperazinyl and the pyrrolidinyl nuclei being unsubstituted or substituted with one or more lower alkyl groups; and the covalent bond of the corresponding group being connected to a substituted isothiazolo or isoxazolo quinolonyl or naphthyridonyl group via a nitrogen atom in an isothiazolo or isoxazolo nucleus: as well as the corresponding readily hydrolyzable esters, pharmaceutically acceptable salts and hydrates of any of the foregoing compounds.     The products have antibacterial activity.